Post #3
Volt guage needs a permanent live (via a shareable fuse 2,3 amp should be fine) and an earth, if its illuminated too you'll need to find a wire that is live when your lights are on, a courtesy light from anything behind the dash should do fine for this.
Is your oil temp guage electrical or mechanical?
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R H Davey Welding Supplies. I sell new and used welding equipment in the Hampshire area. I take on welding jobs in the evenings, ally casting repairs are one of my specialities but I can weld pretty much anything. PM me with your requirements.
Some of my services: (See my for sale threads)
Engine mount/chassis repair
Solid Beam Mounts BACK IN PRODUCTION
Harness bars